Ikemen Kamen Amai Mask

Sweet Mask is a tall and lean-built young man with messy, shoulder-length light blue hair and yellow eyes. He is considered to be very handsome by the public. Aside from being a hero he is also a famous model, actor and singer, being the most popular one in the world. Sweet Mask has stated that he believes that heroes are to protect the citizens, and if they can't do that, they must become strong enough to be able to do so. He also genuinely cares for the well-being of the citizens around him and actually wishes happiness upon every living thing in the universe. However, befitting the darker side of Sweet Mask's name is his hidden merciless nature. He is shown to have a burning hatred for anything that he sees as evil. Anything that he declares as evil must be swiftly and thoroughly exterminated.

Sweet Mask is shown to adhere to any method that makes heroes popular. He notes that only promotions to S-Class or A-Class are fit for his attention, as they are the heroes who draw the most attention from the public, and hence, any heroes in those ranks who earn themselves negative reputations would drag his reputation down as well. Because of this, Sweet Mask stays in the A-Class Rank 1 position to prevent unworthy heroes from promoting to S-Class.

Sweet Mask is very narcissistic about "beauty overwhelming the power", as he said about his philosophy that "heroes have to be beautiful as well". This became obvious when he showed interest in a worthy S-Class Hero like Genos, who has both a beautiful appeal and having done more heroic deeds as the main priority, fitting Sweet Mask's philosophy.

However, after witnessing the defeat of Garou by Saitama, his viewpoint changes and becomes more focused on the overwhelming power of the individual than beauty alone.